Method of making bearings



y 1932- w. H. YKLOCKE METHOD OF MAKING BEARINGS Filed Dec. 28, 1928 INVENTOR. v 5/57/14? 7. 4700/66 A TTO Patented July 12, 1932 UNITED STATES PATENT OFFICE WILLIAM H. mm, OF WOODHAVEN, NEW YORK, ASSIG-NOR TO THE CLEVELAND GRAPHITE BRONZE COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO METHOD or MAKING BEARINGS Application filed December 28, 1928. Serial No. 328,968.

The present invention, relating, as indicated, to a bearing and method of making the same, is more particularly directed to the manufacture of lined cylindrical or semirflcylindrical bearings formed of tough, resistant backing metal and a softer bearing metal integrally united to the inside of the shell and to provision on the shell of integral end flanges. A further object of the invention is the provision of a bearing of the character described provided with one or more end flanges formed integrally with the tubular shell of the bearing and a method of forming the same with the removal of a minimum '18 amount of material from the original blank and without the necessity for machining the shell to any considerable extent after it is formed.

To'the accomplishment of the foregoing '20 and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims; the annexed drawing and the following description setting forth in detail one method and one product exemplifying my invention,

such disclosed procedure and product constituting, however, but one of various applications of the principles of my invention.

In said annexed drawing Fig. 1 is a plan view of a blank prepared for the formation of a bearing of the character described therefrom; Figs. 2, 3, 4 and 5 are central cylindrical sectionsshowingrespectively steps in the formation of an open ended cup from the blank of Fig. 1; Fig. 6 is a view similar to Fig. 5, but with the closed end removed; Fig. 7 is a view similar to Fig. 6, but .showing the cylindrical end partially formed into a flange; Fig. 8 is a similar View '49 after the complete formation of the second flange; and Fig. 9 is a similar view of the finished lined shell.

In Fig. 1 there is shown a circular blank 1 which may be formed of steel, brass, bronze or other suitably strong metal suitable for forming the body of the shell which is to be lined. This blank is first drawn between j dies into the tapered cup 2, which is shown "in Fig. 2, and which is provided with a relafill tively cylindrical portion 3, a tapered portion 4 and a curved end portion 5. This cup 2 is further drawn downbetween suitable dies, first into the partially tapered cup 6 shown in Fig. 3, and finally into the cup shown in Fig. 4, in which there is a relatively long cylindrical barrel 7, an annularly formed flange 8 and a curved bottom or end 9. A subsequent operation forces the tapered flange 8 into the right-angled flange 10 of Fig. 5 and forms the curved bottom 9 into 80 the flat bottom or end 11.

The cup 2 is next operated to remove the closed end 11, which may either bepunched out or may be machined off as desired, giving the open ended shell 12 shown in Fig. 6. This shell is then placed between expanding dies which act to throw out the previously closed end of the shell into an initial flange 13 standing at about 45 degrees to the wall of the shell proper and this flange is, in a sub- 7 sequent operation, pressed over further to form the right-angled flange 14 shown in Fig. 8, which is substantially a duplicate of the flange 1O initially formed at the other end of the shell. The flange 14 is ordinarily slightly irregular and is next trimmed in a suitable die, or if desired may be machined to bring it to the same outside dimension as the flange 10.

The flanged shell which has thus been formed is next lined with a suitable bearing material, such as babbitt 15 (see Fig. 9), either by die casting or centrifugal casting, after which the lined shell may be finished by slight outside and inside machining oper- 5 ations and is then ready for use as a cylindrical lined bearing or it may be split on a diametral plane, the two approximately semi-cylindrical half bearings thus formed being then reformed and cut to the proper 9o circumferential length in any suitable manner.

The present method of forming a flanged bearing is particularly adapted to bearings. in which the thickness of the shell is relatively slight, as it is extremely difficult to form the shell fianges that are shown in thickwalled material. 'The present method reduces to a minimum the machining of the shell and produces an extremely tough, strong we supporting shell for the lining of bearing material while the flanges which are formed in this method are accurate and the operations necessary for forming them are simple and can be carried out as a logical part of the formation of the entire bearing.

Other forms may be employed embodying the features of my invention instead of the one here explained, change being made in t the former construction, provided the elements stated by the following claim or the equivalent of such stated elements be employed, whether produced by my preferred method or by others embodying steps equivalent to those stated in the following claim. I I therefore particularly point out and distinctly claim as my invention In a method of making flanged bearings, the steps which consist in drawing a circular blank into a cu and simultaneously forming an encircling ange at the open end of said cup, removing the closed end of said cup, forcing the end wall of said cup adjacent to the former closed end outwardly at an angle to the wall thereof, and then bending said end further outwardly into a right-angled encircling flange, trimming said flange to true circular shape, the thickness of said blank being maintained a constant during allof said preceding steps and then lining the flanged shell thus formed by integrally unitin% thereto a suitable bearing material.

igned by me, this 13th "day of December, 192

WILLIAM H. KLOCKE. 

